Answer :

Order of operations is PEMDAS

1. P (Parentheses)
2. E (Exponents
3. M (Multiplication)
4. D (Division)
5. A (Addition)
6. S (Subtraction)

Question Example-- 

(7 - 2) × 4² ÷ 2 - 3 + 1

(5) ×  ÷ 2 - 3 + 1

5 × 16 ÷ 2 - 3 + 1

80 ÷ 2 - 3 + 1

40 - 3 + 1

40 - 4

36 <--- is your final answer